This helps immensely with my current project.
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| Scanning Glossary http://interceptradio.com/bbs/viewtopic.php?f=1&t=2391 |
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| Author: | Jim [ Mon Oct 27, 2008 1:16 pm ] |
| Post subject: | Scanning Glossary |
Started to compile some terms related to scanning. These are mostly trunking terms. We all know the usual terms like squelch, LCD, etc. Any additional terms or corrections would be appreciated. AMBE: (Advanced Multi-Band Excitation) A proprietary speech coding standard developed by Digital Voice Systems, Inc APCO Project 16 : (a standard describing the characteristics and capabilities of public safety trunked radio systems) such as: channel access times automated priority recognition data systems interface individuality of system users command and control flexibility system growth capability frequency use reliability APCO Project 25: (a suite of standards for digital radio communications for use by federal, state/province and local public safety agencies in North America to enable them to communicate with other agencies and mutual aid response teams in emergencies.0 C4FM: (Continuous 4 level FM modulation) CAI: (Common Air Interface) CDMA: (code division multiple access) Control channels: (a trunked radio system is packet switching computer network. Users' radios send data packets to a computer, operating on a dedicated frequency. CQPSK: (Compatible quadrature phase shift keying) A modulation found in newer P25 systems) CTCSS: (Continuous Tone Coded Squelch System) Also known as PL DCS: (Digital Coded Squelch) Also known as DPL DES: (Data Encryption Standard) A cipher (a method for encrypting information) that selected by NBS as an official Federal Information Processing Standard (FIPS) for the United States in 1976 and which has subsequently enjoyed widespread use internationally. It is based on a Symmetric-key algorithm that uses a 56-bit key. DVSI: (Digital Voice Systems, Inc.) EDACS: (Enhanced Digital Access Communications System) ESK: (EDACS Security Key) FDMA: (Frequency Division Multiple Access) iDEN: (integrated Digital Enhanced Network) LCN: (Logical Channel Numbers) LTR: (Logic Trunked Radio) Motorola Type I: (original Motorola systems that were based on Fleets and Subfleets) Motorola Type II: (second generation Motorola talkgroups and individual radio IDs) Motorola Type IIi Hybrid: (system has "blocks" of the system that are Type I Fleets/Subfleets and Type II talkgroups.) NAC CODE: (Network Access Code) In the Project 25 Common Air Interface definition, the Network Access Code is analogous to the use of CTCSS and CDCSS signals in analog radio systems. It is a code transmitted in the preamble of the Project 25 signal and repeated periodically throughout the transmission. Its purpose is to provide selective access to and maintain access to a receiver. It is also used to block nuisance and other co-channel signals. There are up to 4096 of these NAC codes. OpenSky: (is a wireless communication system that applies voice-over-IP transport to radio communications applications.) OTAR: (Over-The-Air-Rekeying) PMR: (Professional Mobile Radio) also known as Private Mobile Radio in the UK. Privacy Plus: (refers to a Type I system. Privacy Plus systems are normally older public safety systems and SMRs) Smartnet: (Motorola Type I and II trunked systems APCO-16 compliant.) Up to 28 system channels Up to 65534 unique radio ids Up to 4095 talkgroups They use odd numbered talkgroups SMR: (Specialized Mobile Radio system) A conventional two-way radio system, or trunked radio system, operated by a service in the 800 or 900 MHz bands. Talkgroup: (a generic term that refers to virtual radio channels created by trunked radio systems.) TETRA: (TErrestrial Trunked RAdio) TETRA is endorsed by the European Radio Communications Committee (ERC) and mandated for use in Europe. Europe's equivelant to our APCO P25. TDMA: (Time division multiple access) commonly used in the United States to refer to D-AMPS |
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| Author: | chpalmer [ Mon Oct 27, 2008 6:13 pm ] |
| Post subject: | Re: Scanning Glossary |
Cant believe you missed LMR land mobile radio :roll: :D :mrgreen: :mrgreen: :mrgreen: :beer: I know- I know but I couldnt resist... |
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| Author: | Atomic Taco [ Mon Oct 27, 2008 7:11 pm ] |
| Post subject: | Re: Scanning Glossary |
This helps immensely with my current project.
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| Author: | KE7JFF [ Mon Oct 27, 2008 9:06 pm ] |
| Post subject: | Re: Scanning Glossary |
How about SELCAL? |
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